Do what it will, after some starting problems

First I had to try 3 different television sets until I draufkam by chance that you have to connect the power cord to the adapter this first (!) And only after a few seconds that can connect HDMI cable. Otherwise you have no image - or the TV is like telling "no signal".

The picture is, unfortunately, also shown on any available LCD television filling but either the left and right with a black border - or it looks up and down a bit over it and has still left and right a (smaller) margin. So not really optimal.